Remove cube edges, see issue #76
Remove cube edges, see issue #76

-create function trim_edge_cube(), which is called after the baseline is
 removed. Default behaviour is to remove edges, but it can be controlled
 by trim_edge keyword:
 `baseline( file_in, file_out, trim_edge=True)`
.

GBTAmmoniaSurvey/GAS,rfriesen/GAS,low-sky/GAS,jakeown/GAS